BYK CAP 1000+ - Page 24

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Appendix A
SAMPLE SIZE
Itisnecessarythatsufcientsampleisplacedbetweentheconeandplateto
completely cover the surface of the cone when the cone is locked in the RUN
position.Withsufcientsample,anexcessofabout1mminwidthwillbeseen
around the periphery of the cone edge.
For calibration and best reproducibility of results, the sample sizes shown in Table
A1 should be used.
CAP 1000+ RANGES FOR CONES 01 THROUGH 10
To determine the full scale viscosity range (FSR) for any cone/speed, divide the
ConeRangeCoefcient(refertoTableA2)bytherotationalspeed(RPM).
FullScaleViscosityRange(Poise)=
Cone Range Coefcient
Equation A1
RPM
CAP 1000+ RANGES FOR CONES 11 THROUGH 20
Spindle Multiplier Constant (SMC):
SMC=(suppliedbythemanufacturer)
Shear Rate Constant (SRC):
SRC=(suppliedbythemanufacturer)
Viscosity(poise)=
Shear Stress (dynes/cm2)
Equation A2
Shear Rate (sec-1)
ShearStress(dynes/cm2)= Viscosity (poise) x Shear Rate (sec-1) Equation A3
ShearRate=
__ω__
Equation A4
sin θ
 ω= ConeSpeed(rad/sec)=
(
2π
)
x N
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 N= RPM
 θ= ConeAngle(degrees)
 r= radiusofconespindle
Viscosity(poise)=
Full Scale Viscosity Range x (% FSR)
Equation A5
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